Seudónimo Seudónimo
  • 03-06-2017
  • Mathematics
contestada

Find the area of the regular 20​-gon with radius 77 mm.

Respuesta :

wolf1728
wolf1728 wolf1728
  • 03-06-2017
The area of a polygon equals
area = circumradius² * number of sides * sin (360 / # of sides) / 2
area = 77² * 20 * sin (360 / 20) / 2
area = 77² * 20 * sin (18) / 2
area = 118,580 * 0.30902 / 2
area = 36,643.59 / 2
area = 18,321.8 square millimeters


Answer Link

Otras preguntas

Do the majority of hamilton's purposes relate to domestic or to foreign affairs
Use the four terms down below to write in Spanish about something a student might do during a school day?
hurry up plzx Which numbers are 4 units from −2 on this number line? Drag and drop all the numbers that are 4 units from −2 to their correct position on the n
please help me with this.what are the x-intercepts of the graph of this equation?
What can a scientist do if he repeats and experiment and gets diffrent results?
I am very confused, help would be much appreciated!
Name the Ancient Seven Wonders of World
(a) a 0.2 m potassium hydroxide solution is titrated with a 0.1 m nitric acid solution. (i) balanced equation: (ii)what would be observed if the solution was ti
Lily begins solving the equation 4(x – 1) – x = 3(x + 5) – 11. Her work is shown below. 4(x – 1) – x = 3(x + 5) – 11 4x – 4 – x = 3x + 15 – 11 3x – 4 = 3x + 4
I need help in number 2 ASAP please